CRT file format description

Many people often share .crt files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .crt files. To address this issue, we have created this page to offer assistance and guidance on handling .crt files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .crt files.

Our aim is to simplify the process and promote seamless use of the .crt file format.

2 filename extension(s) found in our database.

.crt - Certificate File

The CRT other files are related to OpenSSL. The CRT file is a Certificste File. The .CRT file contains the certificate, including the identity information, public key, expiry date, and signature.

Other files
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Certificate File related extensions:
OpenSSL Certificate Authority Data
Certificate Signing Request Data
Certificate File
OpenSSL Message Digest Data
Key Database File
OCSP Request Data

.crt - Oracle Terminal Settings Information

The CRT data files are related to Oracle Database. The CRT file is an Oracle Terminal Settings Information. Oracle Database is a multi-model database management system produced and marketed by Oracle.

Oracle Database
Data files
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Oracle Terminal Settings Information related extensions:
FME Desktop Format Data
CryENGINE Character Animation List Data
REScheck Data
ListViewGenerator Data
XTreeGold Overlay Data
DNASTAR Lasergene Multi-Seq Data

Naturally, other applications may also use the .crt file extension. Even harmful programs can create .crt files. Be especially cautious with .crt files coming from an unknown source!

Can't open a .crt file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .crt file extension is often given incorrectly!

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

cdt, cet, cft, cgt, cr, crf, crg, crh, crr, cry, ct, ctr, ctt, drt, frt

Is it possible that the filename extension is misspelled?

There is a possibility that the .crt filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .crt:

Stanford Microarray Database Clustered Data
µVision Cross-Reference Data
MSN Messenger Contact List
WebSRT Subtitle Data
CRiSP Macro File
TIFF Contone File

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

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